PetscDAEnsembleInitialize

Initialize ensemble members with Gaussian perturbations

Synopsis

PetscErrorCode PetscDAEnsembleInitialize(PetscDA da, Vec x0, PetscReal obs_error_std, PetscRandom rng)

Input Parameters

• da - PetscDA context

• x0 - Background state

• obs_error_std - Standard deviation for perturbations

• rng - Random number generator

Notes

Each ensemble member is initialized as x0 + Gaussian(0, obs_error_std)

See Also

PetscDA: Data Assimilation, PETSCDAETKF, PETSCDALETKF, PetscDA

Level

beginner

Location

src/ml/da/impls/ensemble/daensemble.c

Examples

src/ml/da/tutorials/ex4.c
src/ml/da/tutorials/ex3.c
src/ml/da/tutorials/ex2.c
src/ml/da/tutorials/ex1.c

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Index of all PetscDA routines
Table of Contents for all manual pages
Index of all manual pages